panic: runtime error: slice bounds out of range [12:4] goroutine 1099770 [running]: panic(0x133dc20, 0xc00fc78150) GOROOT/src/runtime/panic.go:1065 +0x565 fp=0xc004c735a0 sp=0xc004c734d8 pc=0x437c65 runtime.goPanicSliceB(0xc, 0x4) GOROOT/src/runtime/panic.go:116 +0xa5 fp=0xc004c735e8 sp=0xc004c735a0 pc=0x435445 gvisor.dev/gvisor/pkg/sentry/fsimpl/fuse.(*DeviceFD).writeLocked(0xc00840d700, 0x1606298, 0xc0042a4a80, 0x16007a0, 0xc00894f000, 0x0, 0x1, 0x20000000, 0xc, 0x100, ...) pkg/sentry/fsimpl/fuse/dev.go:364 +0xac5 fp=0xc004c737c0 sp=0xc004c735e8 pc=0x1038a45 gvisor.dev/gvisor/pkg/sentry/fsimpl/fuse.(*DeviceFD).Write(0xc00840d700, 0x1606298, 0xc0042a4a80, 0x16007a0, 0xc00894f000, 0x0, 0x1, 0x20000000, 0xc, 0x100, ...) pkg/sentry/fsimpl/fuse/dev.go:294 +0x10a fp=0xc004c73860 sp=0xc004c737c0 pc=0x1037f0a gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).Write(0xc00840d700, 0x1606298, 0xc0042a4a80, 0x16007a0, 0xc00894f000, 0x0, 0x1, 0x20000000, 0xc, 0x100, ...) pkg/sentry/vfs/file_description.go:748 +0xc3 fp=0xc004c738f8 sp=0xc004c73860 pc=0x788ca3 gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.write(0xc0042a4a80, 0xc00840d700, 0x16007a0, 0xc00894f000, 0x0, 0x1, 0x20000000, 0xc, 0x100, 0x0, ...) pkg/sentry/syscalls/linux/vfs2/read_write.go:430 +0xa5 fp=0xc004c73a88 sp=0xc004c738f8 pc=0xf707a5 gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.Write(0xc0042a4a80, 0x3, 0x20000000, 0xc, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ...) pkg/sentry/syscalls/linux/vfs2/read_write.go:393 +0x293 fp=0xc004c73bb8 sp=0xc004c73a88 pc=0xf6ffb3 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0042a4a80, 0x1, 0x3, 0x20000000, 0xc, 0x0, 0x0, 0x0, 0xc000001fa0, 0x142f0c0, ...) pkg/sentry/kernel/task_syscall.go:115 +0x199 fp=0xc004c73c78 sp=0xc004c73bb8 pc=0xa848f9 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0042a4a80, 0x1, 0x3, 0x20000000, 0xc, 0x0, 0x0, 0x0, 0x0, 0x0) pkg/sentry/kernel/task_syscall.go:290 +0x70 fp=0xc004c73d00 sp=0xc004c73c78 pc=0xa85bd0 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0042a4a80, 0x1, 0x3, 0x20000000, 0xc, 0x0, 0x0, 0x0, 0x0, 0x0) pkg/sentry/kernel/task_syscall.go:237 +0xb4 fp=0xc004c73d60 sp=0xc004c73d00 pc=0xa856b4 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0042a4a80, 0x2, 0xc0042a4a80) pkg/sentry/kernel/task_syscall.go:204 +0x198 fp=0xc004c73e30 sp=0xc004c73d60 pc=0xa84f98 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc0042a4a80, 0x15d88a0, 0x0) pkg/sentry/kernel/task_run.go:294 +0xd9a fp=0xc004c73f68 sp=0xc004c73e30 pc=0xa77eba gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0042a4a80, 0x7fa6) pkg/sentry/kernel/task_run.go:98 +0x1b9 fp=0xc004c73fd0 sp=0xc004c73f68 pc=0xa76c79 runtime.goexit() src/runtime/asm_amd64.s:1371 +0x1 fp=0xc004c73fd8 sp=0xc004c73fd0 pc=0x472861 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:398 +0x116